I can't make write work

[sgaure]

When doing a write on a Tx stream I get an error:

    nested task error: MethodError: no method matching unsafe_convert(::Type{Ptr{Int32}}, ::Nothing)
    The function `unsafe_convert` exists, but no method is defined for this combination of argument types.
    
    Closest candidates are:
      unsafe_convert(::Type{Cwstring}, ::Any)
       @ Base strings/cstring.jl:101
      unsafe_convert(::Type{Ptr{T}}, ::Atomic{T}) where T
       @ Base atomics.jl:335
      unsafe_convert(::Type{Ptr{T}}, ::Array{T}) where T
       @ Base pointer.jl:65
      ...
    
    Stacktrace:
     [1] (::SoapySDR.var"#SoapySDRDevice_writeStream##0#SoapySDRDevice_writeStream##1"{Device, SoapySDR.Stream{ComplexF32}, Ptr{Ptr{ComplexF32}}, Int64, Nothing, Int64, Float64})()
       @ SoapySDR ~/.julia/packages/SoapySDR/adLbS/src/errors.jl:35
     [2] with_error_check(f::SoapySDR.var"#SoapySDRDevice_writeStream##0#SoapySDRDevice_writeStream##1"{Device, SoapySDR.Stream{ComplexF32}, Ptr{Ptr{ComplexF32}}, Int64, Nothing, Int64, Float64})
       @ SoapySDR ~/.julia/packages/SoapySDR/adLbS/src/errors.jl:25
     [3] macro expansion
       @ ~/.julia/packages/SoapySDR/adLbS/src/errors.jl:34 [inlined]
     [4] SoapySDRDevice_writeStream(device::Device, stream::SoapySDR.Stream{ComplexF32}, buffs::Ptr{Ptr{ComplexF32}}, numElems::Int64, flags::Nothing, timeNs::Int64, timeoutUs::Float64)
       @ SoapySDR ~/.julia/packages/SoapySDR/adLbS/src/libsoapysdr.jl:848
     [5] write(s::SoapySDR.Stream{ComplexF32}, buffers::Vector{Vector{ComplexF32}}; timeout::Nothing, flags::Nothing, throw_error::Bool)
       @ SoapySDR ~/.julia/packages/SoapySDR/adLbS/src/device/stream.jl:330
     [6] write
       @ ~/.julia/packages/SoapySDR/adLbS/src/device/stream.jl:306 [inlined]

It seems the problem is in

SoapySDR.jl/src/device/stream.jl

Lines 329 to 343 in ae44914

	out_flags = Ref{Cint}(0)
	nwritten = SoapySDRDevice_writeStream(
	s.d,
	s,
	buff_ptrs,
	samples_to_write - total_nwritten,
	flags,
	0,
	timeout_us,
	)
	if flags isa Ref
	flags[] |= out_flags[]
	end

Shouldn't the newly created out_flags appear on line 335, not flags.

[zsoerenm]

See #111

[sgaure]

But, isn't this just a simple error/bug? The corresponding read passes its out_flags:

SoapySDR.jl/src/device/stream.jl

Lines 190 to 204 in ae44914

	out_flags = Ref{Cint}()
	timens = Ref{Clonglong}()
	nread = SoapySDRDevice_readStream(
	s.d,
	s,
	buff_ptrs,
	samples_to_read - total_nread,
	out_flags,
	timens,
	timeout_us,
	)
	if flags isa Ref
	flags[] |= out_flags[]
	end

The write function requires a flags::Ref{Int}, but the SoapySDRDevice_writeStream requires a flags::Ref{Cint}. If Int is Int64, there is no way to call write which does not throw.